| 摘要 |
<p>71529-15 The production of 2-hydroxyphenyl lower alkyl ketones, e.g. 2-hydroxyacetophenone, by reaction of phenol and a lower alkanoic acid, e.g. acetic acid, is carried out by contacting the phenol and acid at an elevated temperature with a ZSM-5 zeolite catalyst having the formula: 0.9?0.2M2/nO:W2O3:5-100YO2:ZH2O wherein M is a cation, n is the valence of said cation, W is selected from the group consisting of aluminum and gallium, Y is selected from the group consisting of silicon and germanium, and z is from 0 to 40, and in which at least about 80% of the cations are replaced with hydrogen ions. Preferably the catalyst has the formula: 0.9?0.2M2/nO Al2O3 5-100SiO2:ZH2O and M is selected from the group consisting of alkali metal cations and tetraalkylammonium cations, the alkyl groups of which preferably contain 2-5 carbon atoms.</p> |
